{"id":92764,"date":"2024-05-13T16:17:01","date_gmt":"2024-05-13T08:17:01","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=92764"},"modified":"2024-05-13T16:17:06","modified_gmt":"2024-05-13T08:17:06","slug":"sjkssm-2","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/92764.html","title":{"rendered":"SDIO\u63a5\u53e3\u662f\u4ec0\u4e48"},"content":{"rendered":"\n<p>\u3000\u3000<strong>SDIO\u63a5\u53e3\uff0c\u5168\u79f0\u4e3aSecure Digital Input and Output<\/strong>\uff0c\u5373\u5b89\u5168\u6570\u5b57\u8f93\u5165\u8f93\u51fa\u63a5\u53e3\u3002\u5b83\u662f\u5728SD\u5361\u63a5\u53e3\u7684\u57fa\u7840\u4e0a\u53d1\u5c55\u800c\u6765\u7684\uff0c\u517c\u5bb9\u4e4b\u524d\u7684SD\u5361\uff0c\u5e76\u4e14\u53ef\u4ee5\u8fde\u63a5\u652f\u6301SDIO\u63a5\u53e3\u7684\u5404\u79cd\u8bbe\u5907\uff0c\u5982\u84dd\u7259\u3001WIFI\u3001GPS\u7b49\u3002<\/p>\n\n\n\n<p>\u3000\u3000SDIO\u63a5\u53e3\u5728\u7269\u7406\u5c42\u9762\u4e0a\u4f7f\u7528\u4e86SD\u5361\u7684\u4f20\u8f93\u534f\u8bae\uff0c\u4f46\u4e0eSD\u5361\u4e0d\u540c\uff0c\u5b83\u652f\u6301\u6570\u636e\u7684\u53cc\u5411\u4f20\u8f93\uff0c\u5373\u53ef\u4ee5\u8fdb\u884c\u6570\u636e\u7684\u8f93\u5165\u548c\u8f93\u51fa\u3002\u6b64\u5916\uff0cSDIO\u63a5\u53e3\u8fd8\u589e\u52a0\u4e86\u4e00\u4e9b\u65b0\u7684\u547d\u4ee4\uff0c\u5982CMD52\u548cCMD53.\u8fd9\u4e9b\u547d\u4ee4\u7528\u4e8e\u63a7\u5236\u548c\u7ba1\u7406\u6570\u636e\u6d41\u3002<\/p>\n\n\n\n<p>\u3000\u3000SDIO\u63a5\u53e3\u7684\u8bbe\u8ba1\u91c7\u7528\u4e86host-device\u6a21\u5f0f\uff0c\u5176\u4e2d\u4e00\u7aef\u662f\u4e3b\u673a\u7aef\uff0c\u8d1f\u8d23\u53d1\u9001\u547d\u4ee4\u548c\u63a7\u5236\u6570\u636e\u6d41;\u53e6\u4e00\u7aef\u662f\u8bbe\u5907\u7aef\uff0c\u54cd\u5e94\u4e3b\u673a\u7684\u547d\u4ee4\u5e76\u5904\u7406\u6570\u636e\u4f20\u8f93\u3002\u8fd9\u79cd\u8bbe\u8ba1\u7b80\u5316\u4e86\u8bbe\u5907\u7684\u8bbe\u8ba1\uff0c\u56e0\u4e3a\u6240\u6709\u7684\u901a\u4fe1\u90fd\u662f\u7531\u4e3b\u673a\u7aef\u53d1\u8d77\u7684\u3002<\/p>\n\n\n\n<p>\u3000\u3000SDIO\u63a5\u53e3\u4e0d\u4ec5\u9650\u4e8e\u9ad8\u901f\u6570\u636e\u4f20\u8f93\uff0c\u8fd8\u5305\u62ec\u4f4e\u901f\u6807\u51c6\uff0c\u9002\u7528\u4e8e\u9700\u8981\u8f83\u4f4e\u6570\u636e\u4f20\u8f93\u901f\u7387\u7684\u5e94\u7528\u573a\u666f\uff0c\u5982\u8c03\u5236\u89e3\u8c03\u5668\u3001\u6761\u7801\u626b\u63cf\u4eea\u548cGPS\u6a21\u5757\u7b49\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>SDIO\u63a5\u53e3\u662f\u4e00\u79cd\u57fa\u4e8eSD\u5361\u6280\u672f\u53d1\u5c55\u8d77\u6765\u7684\u9ad8\u6027\u80fd\u6570\u5b57\u8f93\u5165\u8f93\u51fa\u63a5\u53e3\uff0c\u5b83\u901a\u8fc7\u589e\u52a0\u65b0\u7684\u547d\u4ee4\u548c\u652f\u6301\u53cc\u5411\u6570\u636e\u4f20\u8f93\uff0c\u4f7f\u5f97\u8bbe\u5907\u80fd\u591f\u66f4\u7075\u6d3b\u5730\u8fde\u63a5\u548c\u4f7f\u7528\u5404\u79cd\u5916\u8bbe\uff0c\u540c\u65f6\u4e5f\u652f\u6301\u4f4e\u901f\u6570\u636e\u4f20\u8f93\u7684\u9700\u6c42\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 SDIO\u63a5\u53e3\u4e0eSD\u5361\u7684\u5177\u4f53\u6280\u672f\u5dee\u5f02\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n<p>\u3000\u3000SDIO\u63a5\u53e3\u4e0eSD\u5361\u7684\u6280\u672f\u5dee\u5f02\u4e3b\u8981\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u63a5\u53e3\u6807\u51c6\u548c\u517c\u5bb9\u6027<\/strong>\uff1aSDIO\u63a5\u53e3\u662f\u5728SD\u5361\u63a5\u53e3\u7684\u57fa\u7840\u4e0a\u53d1\u5c55\u800c\u6765\u7684\uff0c\u5b83\u4e0d\u4ec5\u517c\u5bb9\u4ee5\u524d\u7684SD\u5361\uff0c\u8fd8\u53ef\u4ee5\u8fde\u63a5\u5230\u5176\u4ed6SDIO\u63a5\u53e3\u8bbe\u5907\uff0c\u5982\u84dd\u7259\u3001WIFI\u3001\u7167\u76f8\u673a\u7b49\u3002\u8fd9\u8868\u660eSDIO\u63a5\u53e3\u5177\u6709\u66f4\u5e7f\u6cdb\u7684\u5e94\u7528\u8303\u56f4\u548c\u66f4\u597d\u7684\u6269\u5c55\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f20\u8f93\u6a21\u5f0f\u548c\u901f\u5ea6<\/strong>\uff1aSDIO\u63a5\u53e3\u652f\u6301\u4e24\u79cd\u7c7b\u578b\u7684\u5361\uff1a\u5168\u901f\u548c\u4f4e\u901f\u3002\u5168\u901fSDIO\u5361\u7684\u4f20\u8f93\u7387\u53ef\u4ee5\u8d85\u8fc7100MBps\uff0c\u800c\u4f4e\u901fSDIO\u5361\u7684\u65f6\u949f\u901f\u7387\u57280\u81f3400kHz\u4e4b\u95f4\u3002\u8fd9\u79cd\u901f\u5ea6\u7684\u5dee\u5f02\u4f7f\u5f97SDIO\u80fd\u591f\u9002\u5e94\u4e0d\u540c\u7684\u6570\u636e\u4f20\u8f93\u9700\u6c42\uff0c\u4ece\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u5230\u4f4e\u901fI\/O\u80fd\u529b\u7684\u5e94\u7528\u573a\u666f\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4fe1\u53f7\u4f20\u8f93\u65b9\u5f0f<\/strong>\uff1aSDIO\u63a5\u53e3\u4f7f\u7528SPI(Serial Peripheral Interface)\u548c1\u4f4dSD\u4f20\u8f93\u6a21\u5f0f\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u53ea\u9700\u8981\u5355\u4e00\u7684\u4fe1\u53f7\u7ebf\u6765\u4f20\u8f93\u6570\u636e\uff0c\u7b80\u5316\u4e86\u786c\u4ef6\u8bbe\u8ba1\u5e76\u51cf\u5c11\u4e86\u6210\u672c\u3002\u6b64\u5916\uff0cSDIO\u662f\u540c\u6b65\u603b\u7ebf\uff0c\u5176\u4fe1\u53f7\u7f6e\u4f4d\u548c\u91c7\u6837\u90fd\u8981\u4e0e\u65f6\u949f\u540c\u6b65\uff0c\u6bcf\u4e2a\u65f6\u949f\u5468\u671f\u4e2d\u7684\u6bcf\u4e2a\u4fe1\u53f7\u53ef\u4ee5\u4f20\u8f931bit\uff0c\u8fd9\u6709\u52a9\u4e8e\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u7684\u51c6\u786e\u6027\u548c\u53ef\u9760\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f4e\u901f\u6807\u51c6\u7684\u589e\u52a0<\/strong>\uff1a\u4e0eSD\u5361\u89c4\u8303\u76f8\u6bd4\uff0cSDIO\u7684\u4e00\u4e2a\u91cd\u8981\u533a\u522b\u662f\u589e\u52a0\u4e86\u4f4e\u901f\u6807\u51c6\uff0c\u8fd9\u4f7f\u5f97\u5b83\u80fd\u591f\u4ee5\u6700\u5c0f\u7684\u786c\u4ef6\u5f00\u652f\u652f\u6301\u4f4e\u901fI\/O\u80fd\u529b\u3002\u8fd9\u4e00\u70b9\u5bf9\u4e8e\u9700\u8981\u4f4e\u529f\u8017\u6216\u4f4e\u6210\u672c\u89e3\u51b3\u65b9\u6848\u7684\u5e94\u7528\u5c24\u4e3a\u91cd\u8981\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000SDIO\u63a5\u53e3\u4e0eSD\u5361\u76f8\u6bd4\uff0c\u5728\u517c\u5bb9\u6027\u3001\u4f20\u8f93\u6a21\u5f0f\u3001\u4fe1\u53f7\u4f20\u8f93\u65b9\u5f0f\u4ee5\u53ca\u5bf9\u4f4e\u901f\u6807\u51c6\u7684\u652f\u6301\u65b9\u9762\u5b58\u5728\u660e\u663e\u7684\u6280\u672f\u5dee\u5f02\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 SDIO\u63a5\u53e3\u652f\u6301\u7684\u6570\u636e\u53cc\u5411\u4f20\u8f93\u662f\u5982\u4f55\u5b9e\u73b0\u7684?<\/h2>\n\n\n\n<p>\u3000\u3000SDIO\u63a5\u53e3\u652f\u6301\u7684\u6570\u636e\u53cc\u5411\u4f20\u8f93\u4e3b\u8981\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u6570\u636e\u4f20\u8f93\u6a21\u5f0f<\/strong>\uff1aSDIO\u63a5\u53e3\u652f\u6301\u591a\u79cd\u6570\u636e\u4f20\u8f93\u6a21\u5f0f\uff0c\u5305\u62ec1\u7ebf\u6a21\u5f0f\u30014\u7ebf\u6a21\u5f0f\u548c8\u7ebf\u6a21\u5f0f\u3002\u8fd9\u4e9b\u6a21\u5f0f\u5141\u8bb8\u6570\u636e\u4ee5\u4e0d\u540c\u7684\u901f\u7387\u548c\u4f4d\u6570\u8fdb\u884c\u4f20\u8f93\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u547d\u4ee4\u4e0e\u54cd\u5e94<\/strong>\uff1a\u5728SDIO\u603b\u7ebf\u4e0a\uff0c\u6240\u6709\u7684\u8bbe\u7f6e\u548c\u63a7\u5236\u90fd\u662f\u901a\u8fc7\u53d1\u9001\u547d\u4ee4\u6765\u5b9e\u73b0\u7684\u3002\u8fd9\u610f\u5473\u7740\u6bcf\u6b21\u64cd\u4f5c\u90fd\u662f\u7531HOST\u7aef\u53d1\u8d77\uff0c\u5e76\u4e14CMD\u7ebf\u4e0a\u4f1a\u6709\u76f8\u5e94\u7684response\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u6570\u636e\u5757\u4f20\u8f93<\/strong>\uff1aSDIO\u63a5\u53e3\u901a\u5e38\u4ee5\u6570\u636e\u5757\u7684\u5f62\u5f0f\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u8fd9\u4e9b\u6570\u636e\u5757\u53ef\u4ee5\u662f\u6807\u51c6\u5b57\u8282(8bit)\u6216\u5176\u4ed6\u5f62\u5f0f\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9ad8\u901f\u6570\u636e\u4f20\u8f93<\/strong>\uff1aSDIO\u63a5\u53e3\u652f\u6301\u9ad8\u8fbe100Mb\/sec\u7684\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u901f\u7387\uff0c\u8fd9\u5bf9\u4e8e\u9700\u8981\u5feb\u901f\u6570\u636e\u4ea4\u6362\u7684\u5e94\u7528\u573a\u666f\u975e\u5e38\u91cd\u8981\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u70ed\u63d2\u62d4\u548c\u4e3b\u4ece\u5173\u7cfb\u7ba1\u7406<\/strong>\uff1aSDIO\u63a5\u53e3\u8fd8\u652f\u6301\u70ed\u63d2\u62d4\u529f\u80fd\uff0c\u53ef\u4ee5\u5728\u8bbe\u5907\u4e4b\u95f4\u52a8\u6001\u5207\u6362\u4e3b\u4ece\u5173\u7cfb\uff0c\u540c\u65f6\u652f\u6301\u7ed9\u4e88\u4e2d\u65ad\u7684\u80fd\u529b\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 CMD52\u548cCMD53\u547d\u4ee4\u5728SDIO\u63a5\u53e3\u4e2d\u5177\u4f53\u7528\u4e8e\u4ec0\u4e48\u529f\u80fd?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728SDIO\u63a5\u53e3\u4e2d\uff0cCMD52\u548cCMD53\u547d\u4ee4\u5177\u6709\u4e0d\u540c\u7684\u529f\u80fd\u548c\u7528\u9014\u3002<\/p>\n\n\n\n<p>\u3000\u3000CMD52\u547d\u4ee4\u4e3b\u8981\u7528\u4e8e\u8bfb\u5199\u5bc4\u5b58\u5668\u3002\u6839\u636e\u8bc1\u636e\uff0cCMD52\u662f\u4e00\u4e2a\u76f4\u63a5\u8bfb\u5199I\/O\u5bc4\u5b58\u5668\u7684\u547d\u4ee4\uff0c\u5b83\u662f\u8bfb\u53d6\u67d0\u4e2aI\/O\u5bc4\u5b58\u5668\u6700\u5feb\u7684\u65b9\u6cd5\uff0c\u901a\u5e38\u7528\u4e8e\u521d\u59cb\u5316\u67d0\u4e9b\u5bc4\u5b58\u5668\u6216\u8005\u8bfb\u53d6\u67d0\u4e9b\u5bc4\u5b58\u5668\u3002\u6b64\u5916\uff0cCMD52\u6bcf\u6b21\u53ea\u80fd\u8bfb\u5199\u4e00\u4e2a\u5b57\u8282\u3002\u8fd9\u8868\u660eCMD52\u547d\u4ee4\u5728SDIO\u534f\u8bae\u4e2d\u4e3b\u8981\u7528\u4e8e\u57fa\u672c\u7684\u6570\u636e\u4f20\u8f93\u548c\u5bc4\u5b58\u5668\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p>\u3000\u3000CMD53\u547d\u4ee4\u5219\u6269\u5c55\u4e86CMD52\u7684\u529f\u80fd\uff0c\u4f7f\u5f97\u6bcf\u6b21\u53ef\u4ee5\u8bfb\u5199\u591a\u4e2a\u5b57\u8282\u6216\u591a\u4e2a\u5757(BLOCK)\u3002\u8fd9\u79cd\u6269\u5c55\u4f7f\u5f97CMD53\u6210\u4e3a\u5904\u7406\u5927\u91cf\u6570\u636e\u4f20\u8f93\u7684\u7406\u60f3\u9009\u62e9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 SDIO\u63a5\u53e3\u5728\u4f4e\u901f\u6570\u636e\u4f20\u8f93\u5e94\u7528\u573a\u666f\u4e2d\u7684\u5b9e\u9645\u5e94\u7528\u6848\u4f8b\u6709\u54ea\u4e9b?<\/h2>\n\n\n\n<p>\u3000\u3000SDIO\u63a5\u53e3\u5728\u4f4e\u901f\u6570\u636e\u4f20\u8f93\u5e94\u7528\u573a\u666f\u4e2d\u7684\u5b9e\u9645\u5e94\u7528\u6848\u4f8b\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul 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